WO2000065151A1 - Profil de fil metallique profile a fonctionnalite amelioree - Google Patents

Profil de fil metallique profile a fonctionnalite amelioree Download PDF

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Publication number
WO2000065151A1
WO2000065151A1 PCT/US2000/011071 US0011071W WO0065151A1 WO 2000065151 A1 WO2000065151 A1 WO 2000065151A1 US 0011071 W US0011071 W US 0011071W WO 0065151 A1 WO0065151 A1 WO 0065151A1
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WO
WIPO (PCT)
Prior art keywords
cylinder
screen cylinder
wire
upstream
slot
Prior art date
Application number
PCT/US2000/011071
Other languages
English (en)
Other versions
WO2000065151A8 (fr
Inventor
Frey A. Frejborg
Original Assignee
Cae Screenplates, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Cae Screenplates, Inc. filed Critical Cae Screenplates, Inc.
Priority to AU46612/00A priority Critical patent/AU4661200A/en
Publication of WO2000065151A1 publication Critical patent/WO2000065151A1/fr
Publication of WO2000065151A8 publication Critical patent/WO2000065151A8/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/16—Cylinders and plates for screens

Definitions

  • screen cylinders with slotted apertures that are used for screening cellulosic fibrous material pulp, in the pulp and paper industry, milled screen cylinders, and screen cylinders fabricated from discrete elements, such as bars or wires.
  • the screen cylinders formed from discrete elements, including wedge wire screen cylinders, are known to have higher capacity than milled screen cylinders because there is more potential open area.
  • the milled cylinder had a debris removal efficiency of over 77%, while the wedge wire cylinder had a debris removal efficiency of about 40%, using the same furnish.
  • the wedge wire screen cylinders may more accurately simulate the milled screen cylinders, and therefore have an increased debris removal efficiency, e.g. increased at least about 10% compared to a conventional wedge wire cylinder of substantially the same construction.
  • the wedge wire cylinder had continuous slots and 1.63 dm 2 open area and the milled cylinder had 1.28 dm 2 open area.
  • the pressure screen in which the test was performed had a rotor with four 105 mm wide foils, operating at a tip speed of about 19 m/sec, giving a time for a negative pulse in one slot of about .2 thousandths of a second.
  • the wedge wire cylinder was found to have about 50% more shives in the accepts than the milled cylinder. Also, a wedge wire screen cylinder typically has about a 15% higher power consumption.
  • a wedge wire screen cylinder construction is provided that significantly mitigates or substantially eliminates the comparative differences between wedge wire and milled cylinders related to the Coanda effect and the plug phenomena.
  • a screen cylinder formed from discrete elements, as opposed to being milled which comprises the following components: A screen cylinder frame having a screen surface.
  • the screen surface comprising a plurality of bars or wires mounted to form screening slots between the bars and wires.
  • at least one of the upstream bar or wire surface and associated downstream bar or wire surface being contoured to define the slot in a manner which simulates the form of a substantially sharp edge milled screen cylinder with substantially the same contour.
  • the upstream surface may comprise a substantially sharp edge substantially rectangular cross section protuberance extending outwardly from the upstream surface toward the immediately adjacent downstream bar wire, the screening slot being defined between the protuberance and the downstream bar wire.
  • the upstream bar or wire element preferably has a flat surface substantially parallel to the envelope surface ending at a sharp angle substantially perpendicular to the envelope surface. This substantially perpendicular surface forms the upstream side plane of the Contoured ProfileTM as shown in U.S. patent 4,529,520. The height or depth of the side plane surface will depend upon the contour depth necessary to induce the pulses or turbulence required by the screening process.
  • the leading edge of the upstream bar has a very small radius connecting 10 a substantially straight surface, which are at an angle of 5 to 60° from the envelope surface. This angle surface becomes the inclined surface of the proceeding contour. From the angled surface the wire or bar has a slight taper down to the bottom of the wire, which has a radius, or curved bottom connecting to the side plane surface forming a wedge shape form except having a rounded wedge instead of a sharp point. Again the overall wire height and thickness will depend upon both the mechanical strength and contour depth required by the process.
  • the downstream bar or wire has substantially the same shape and is placed substantially parallel to the upstream bar with the inclined surface facing the side plane of the upstream bar The spacing or gap between the two substantially parallel bars forms an open slot, which is the barrier for the debris or contaminants within the stream of fibers
  • Support members hold :he substantially parallel contoured bars cr wires in place by either resistance welding, fillet welding, or by mechanical locking of bars or wires into predetermined interference openings or fittings After the contoured bars or wires are held in place the flat leading surfaces essentially parallel to the envelope surface can be machined either when the plate is in a flat state before roiling into cylinder or after rolling and machining either the I.D.
  • the downstream bar wire also may include a protuberance having a substantially right triangle configuration with a leg of the right triangle substantially paralleling the upstream surface protuberance to define the screening slot
  • each bar or wire may include a transition between the upstream and downstream surfaces thereof, and the transition may include a portion substantially parallel to the tangential direction of movement of the cylinder or slurry moving therepast, and a substantially sharp edge between the upstream surface and the transition
  • the contour of the bars or wires substantially simulating the contour of a milled cylinder increases the debris removal efficiency of the discrete element cylinder at least about 10% compared to the same screen cylinder without the milled cylinder contour simulation, substantially by effecting a plug phenomena that is similar to that in a milled cylinder.
  • a screen cylinder formed from discrete elements as opposed to being milled, which moves in a path or has slurry moving therepast in a path comprising the following components: A screen cylinder frame having a slotted screen surface. A plurality of substantially parallel bars or wires mounted to define screening slots therebetween. Each bar or wire comprising a downstream surface having a slope making an angle of between about 5-60° with respect to the tangential direction of movement of the cylinder or slurry moving therepast over at least the majority of the extent thereof, and an upstream side plane making an angle of between about 70-95 D with respect to the tangential direction of movement or slurry moving therepast.
  • Each downstream surface comprising a closest point, which is closest to a the slot defined thereby, at a point most remote from the slot.
  • a substantially sharp edge protuberance extending outwardly from the upstream surface of each of the bars or wires adjacent the closest point of an immediately adjacent bar or wire, the protuberance and the closest point defining the screening slot therebetween.
  • each downstream surface may include a protuberance adjacent the closest point, which protuberance substantially effects a plug phenomena during negative pulsing (the negative pulse phase).
  • the protuberance is one having a substantially right triangle configuration with a leg of the right triangle substantially paralleling the upstream surface protuberance to provide another substantially sharp edge to define the screening slot.
  • the transition between the upstream and downstream surfaces is preferably also as described above.
  • the upstream protuberance may comprise a substantially rectangular protuberance.
  • the upstream surface may comprise a continuation of a substantially sharp edge at the top of the bar or wire and extending past where the slot forms to the same depth that the downstream surface protuberance extends, to define substantially parallel slot walls having a length dimension at least as great as the width of the slot.
  • the downstream protuberance may simulate a general triangle, isosceles triangle, or an equi-lateral triangle, and need not have a bottom-most point of the continuation of the downstream surface that is a substantially sharp edge.
  • the protuberances and the cooperation of the protuberances with the closest point increases the debris removal efficiency of the cylinder at least about 10% compared to if the protuberances and the cooperation thereof with the closest points were net present in an otherwise identical cylinder.
  • a method of utilizing the screen cylinder such as described above is provided.
  • the method comprises: (a) Causing a slurry of comminuted cellulosic fibrous material (e.g. at a consistency of about .5-5%) to flow with respect to the screen cylinder (e.g. at an average velocity of about 1.5-2.0 meters/second when passing the slots) so that a slurry flows first past the downstream surface of any particular bar or wire, and then past the upstream surface of that particular bar or wire, so that turbulence is formed adjacent the slot between the upstream and downstream surfaces, and so that the Coanda effect at the slot is substantially avoided.
  • the method may also comprise (d) providing a plug phenomena at the relief opening during negative pulsing.
  • (a), (c), and/or (d) are practiced so as to increase the debris removal efficiency of the screen cylinder at least about 10% (e.g. at least about 15%, and often about 20% or more) compared to a substantially identical cylinder, including slot width, without the protuberances and associated closest points.
  • (a) is practiced by causing the slurry to flow (powered by a rotor or foil) while the screen cylinder remains substantially stationary.
  • (a) is practiced at least in part by causing the cylinder to rotate and having the foils or pulse protrusions stationary.
  • FIGURES 1 and 2 are an enlarged schematic cross sectional views of an exemplary milled cylinder contour, and wedge wire contour, respectively, in the prior art
  • FIGURES 3A-3C are views like that of FIGURE 2 only showing the contour of a wedge wire screen cylinder according to three different embodiments of the invention
  • FIGURE 4 is a schematic top perspective view of an exemplary screen cylinder according to the invention.
  • FIGURE 5 is a longitudinal cross sectional view showing the screen cylinder of the invention in a pressure screen for normal operation
  • FIGURE 1 schematically illustrates a cross sectional configuration (greatly enlarged for clarity of illustration) of an exemplary high debris efficiency removal screen cylinder contour, such as shown in U S patents 4,529,520, 5 524,770, and 5,607,589, the disclosures of which are incorporated by reference herein
  • the screen cylinder contour illustrated in FIGURE 1 is milled into a piece of metal, and comprises a cylinder body 10 having a screening surface 1 and an accepts surface 12 Normally the surface 11 is on the interior of the cylinder 10 but may be on the exterior
  • the screening surface 1 1 comprises a plurality of grooves 13 provided in repeating patterns along the surface 1 1 and preferably substantially completely covering the screening surface 1
  • the grooves 13 are substantially transverse to the genera! tangential flow direction 14 of cellulose pulp being screened
  • the grooves 13 may extend substantially the entire length (height) of the cylinder 10 or more typically are interrupted at various
  • Each of the grooves 13 is formed by an upstream (with respect to the tangential direction of pulp flow 14) surface 15, and a downstream surface 16
  • the surface 15 is substantially perpendicular to the flow direction 14 (e g preferably has an angle ⁇ of between about 70-1 10 ; , e.g. about 85°).
  • the downstream surface 16 is sloped over at least a majority of the extent thereof, preferably having an angle ⁇ of between about 5-60° (e.g.
  • a screening slot 17 is defined between the surfaces 15, 16, opening up into an enlarged opening (relief slot, groove, or opening) 18 providing communication between the surfaces 11 , 12
  • the screening slots 17 have the width thereof as the critical dimension, that is a dimension parallel to the general flow path 14; typical widths for the slots 17 are .002-.024 inches
  • a slot 17 may take up the entire transition of the surfaces 15, 16 to each other at the bottom of the groove 13, or a substantially flat (not sloped) continuation of the downstream surface 16 may be provided in which the groove 17 is formed.
  • each of the grooves 17 has a substantially sharp edge portion 19 at the upstream edge of the screening slot 17, and another substantially sharp edge portion 20 at the downstream edge of the screening slot 17
  • the surface 1 1 typically is also defined by an upper transition 21 between adjacent surfaces 15, 16.
  • the transition 21 preferably includes a portion substantially parallel to the tangential flow direction 14 of the pulp, and also includes a substantially sharp edge 22.
  • substantially sharp edge is meant an edge having no radius of curvature, or a radius of curvature of less than about 3 mm, and one which avoids the Coanda effect
  • the configuration of the relief opening 18 (particularly at the portion 18' thereof) provides a plug phenomena preventing excess reverse flow of fibers during negative pulsing
  • FIGURE 2 is a view like that of FIGURE 1 only showing a conventional wedge wire screen cylinder, shown generally by reference numeral 25, and including a screen cylinder frame 26 and having a screen surface shown generally by reference numeral 27.
  • the wedge wire screen cylinder 25 is formed of a plurality of discrete elements, as opposed to the milled configuration for the screen 10. That is, the screen surface 27 is defined by a plurality of metal bars or wires 28, which are adhesively, by mechanical locking, by welding, or a combination thereof, attached to the frame 26.
  • the frame 26 comprises a plurality of widely spaced rings. The bars or wires are cut to axial cylinder lengths in mechanical locking or welded designs and when of resistance welded wedge wire style, the wires are continuous and wrapped around supports 26. Both of these techniques are conventional.
  • the general contour of the bars or wires 28 simulates a plurality of grooves 29, slots 30 opening up into a wide volume 31 , with the slots 30 defined between substantially perpendicular (i.e. angle a about 70-110°) upstream surface 32, and a downstream surface 33 having an angle ⁇ of about 5-60°, in both cases the angles ⁇ , ⁇ being measured with respect to the tangential pulp flow direction 14.
  • the wedge wire screen cylinder 25 attempts to generally simulate the milled contour of screen cylinder 10, because of the configuration of the bars or wires 28 typically used, and their mounting in the rings 26, there are no substantially sharp edges, such as provided at 19, 20, and 22 in the milled screen 10 of FIGURE 1. Rather, the upstream surface 32 is substantially continuously and slightly curved or flat, extending from the groove simulation 29 into the open area 31 , while the edges 34, 35 at the transitions between adjacent surfaces 32, 33 at both the closest point to the slot 30 and the furthest point from the slot 30 are typically rounded, e.g. not substantially sharp edges. Because of this configuration the screen cylinder 25 suffers from the Coanda effect, allowing a greater amount of debris than desired to enter slots 30.
  • FIGURE 3A is a view like that of FIGURE 2 only showing a wedge wire screen cylinder 125 according to the present invention
  • components comparable to FIGURE 2 are shown by same reference numeral only preceded by a "1 "
  • the construction of FIGURE 3A much more accurately simulates the contour and configuration of the milled screen cylinder 10 than does the wedge wire cylinder 25
  • a very significant difference between the screen cylinder 125 compare ⁇ to the cylinder 25 is the prevision of an elongated substantially sharp edge protuberance 38 on the upstream surface 132 of each bar or wire 128 the protuberance 38 defining -- with the closest point 132 of the downstream surface 133 - tne slot 130 That is the protuberance 38 has a substantially sharp edge 39 which greatly increases micro turbulence and therefore increases debris removal efficiency
  • the protuberance 38 is substantially triangular in cross section, extending outwardly from the upstream surface 132 toward the immediately adjacent downstream (in the direction 14) bar or wire 128 with the screen slot 130 defined between the protuberance 38 -- particularly the substantially sharp edge 39 thereof -- and the immediately adjacent downstream bar or wire 128.
  • the slot 130 may have a width between about .002-.024 inches, e.g. .004-.010 inches, or about 0.10-0.15 mm.
  • FIG. 3A is to add an additional hindrance (for debris or shives/stiff fibers) along the otherwise almost straight surface 42 in FIGURE 3B.
  • the protuberance 38 is also helpful in fractionation applications where the objective is to separate long and stiff fibers from short fibers.
  • the debris removal efficiency can be enhanced even more, according to the screen cylinder formed from discrete elements 125 according to the invention, by also providing a protuberance 40 cooperating with the protuberance 38 to define the screening slot 130.
  • the protuberance 40 changes the radius of curvature of the edge 134 so that it becomes a substantially sharp edge.
  • the protuberance 40 as illustrated in FIGURE 3A -- has a substantially right triangle configuration (in cross section) with a slot-defining surface 41 substantially paralleling the outermost slot defining surface 42 of the protuberance 38, so that essentially the slot 130 is defined between the protuberances 38, 40.
  • the screen cylinder 125 is provided at the transition 135 between the surfaces 132, 133 (that is the furthest point from the slot 130 in a direction perpendicular to the tangential flow direction 14) with a short substantially planar surface 44 substantially parallel to the flow direction 14, and with a substantially sharp edge 45.
  • the protuberances 38, 40 are preferably constructed so as to provide a relief opening construction similar to that of the milled cylinder (FIGURE 1 ) relief grooves 18, at the portion 18' thereof. This construction substantially effects a plug phenomena, minimizing reverse flow of fibers and water during the negative pulse phase.
  • the protuberances 38, 40, and the surface 44 with a substantially sharp edge 45 can be added to the bars or wires 128 by welding or other techniques.
  • the bars or wires 128 are cast, extruded, or otherwise formed, they are made integral with the bars or wires 128 (and have substantially the same length or extent), and are of the same metal.
  • the dimension of the protuberance 38 substantially parallel to the direction 14 -- that is the surface 46 illustrated in FIGURE 3A - is about 20-400 microns, while the length of each of the slot-defining surfaces 41 , 42 is about 500-1000 microns, and longer than the surface 46 and the width of the slot 130, and the surfaces 41 , 42 are preferably substantially coextensive as seen in FIGURE 3A.
  • the surface 44 preferably has a length (parallel to the flow direction 14) of about 200-1000 microns.
  • FIGURE 3B is of an embodiment similar to that of FIGURE 3A, with changes made in order to better accommodate practical manufacturing requirements and tolerances when producing the wires or bars.
  • the configuration of FIGURE 3B provides a reasonable depth of the residual material clearing the slot opening 130.
  • components comparable to those in FIGURE 3A are shown by the same reference numeral, only where structure is changed in any way a follows the reference numeral.
  • the protuberance 38' is substantially a continuation of the upstream surface 132 from the substantially sharp edge 45 at the top of the bar or wire 128. This creates a surface 42' which is substantially parallel to the surface 41 ' of the protuberance 40'.
  • the protuberance 40' is substantially the same as the protuberance 40 except that it does not have the configuration of a right triangle, but rather has more of a general triangle (or perhaps isosceles or equi-lateral triangle) configuration, although it need not be exactly triangular, and the bottom-most point 48 of the surface 41 ' and its opposite point at surface 42' each need to have a radius smaller than 0.020 inches, preferably about 0.010 inches.
  • the width of the relief groove at the point of the outmost end of said radiuses is at least four times the slot width or a minimum of 0.020 inches.
  • the surfaces 41 ', 42' preferably extend substantially co-extensively below the surface 134, defining the slot 130, a distance at least as great as the width of the slot 130.
  • FIGURE 3C is an embodiment where the tops of conventional bars or wires 128 have merely been ground or machined to provide the surfaces 44 with the sharp edges 45.
  • the grinding or machining is preferably while the bars or wires 128 are flat (as in FIGURE 3C), i.e. before being rolled into the cylinder 125 (FIGURE 4), although the grinding or machining could alternatively be done after cylinder construction.
  • the structures such as 38, 38', 40, 40' from FIGURES 3A and 3B may or may not be utilized.
  • FIGURE 4 schematically illustrates -- looking in on the surface 49 (the outer surface of the cylinder 125 in FIGURE 4) -- a portion of the exemplary screen cylinder 125 according to the invention
  • FIGURE 5 illustrates one exemplary complete construction of the cylinder 125 schematically illustrated in association with a pressure screen 55 of conventional design, including a housing 56 in which the screen cylinder 125 is mounted
  • the cylinder 125 is essentially stationary, and is mounted on the stationary mounting element 57 within the housing 56.
  • a foil or rotor 58 mounted within the screen cylinder 125 is a foil or rotor 58 which is rotated about a substantially vertical axis defined by the shaft 59 so that there is relative movement between the screening surface 127 and the foil or rotor 58 causing the pulp to flow (in direction 14) past the screen surface 127 to separate accepts from rejects e g at a passing velocity of about 1 5-2 0 m/sec
  • the cylinder 125 can be rotated about the axis of shaft 58
  • the housing 56 includes an inlet 60 for the pulp, an accepts outlet 61 , for pulp that has passed through the slots 130, and a rejects outlet 62 for reject material does not pass through the screen 125
  • the reject rate is minimized and the debris removal efficiency is enhanced while the screen cylinder 125 still maintains the substantially open configuration of conventional wedge wire screens (those formed of discrete elements), e g 60-80% more open area and capacity than a conventional milled cylinder 10
  • all broad ranges include all specific ranges within a broad range For example, 60-80% means 61 -66%, 62-78% 77-80%, and all other narrow ranges with the broad range

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Abstract

On fabrique un cylindre de criblage formé d'éléments discrets (cylindre de criblage du type à fils métalliques profilés) de manière à simuler avec précision la forme d'un cylindre de criblage fraisé à arête sensiblement tranchante présentant sensiblement le même profil. De préférence, on met en oeuvre cette simulation en prévoyant au niveau de la transition entre les surfaces amont et aval (132, 133) de toute barre ou fil particulier (128), une partie sensiblement parallèle à la direction tangentielle (14) du mouvement du cylindre ou de la pâte passant à cet endroit, ainsi qu'une arête sensiblement tranchante entre la surface amont et la transition. Des protubérances (38, 40) définissant la fente (130) sont également prévues à la fois sur les barres ou fils amont et aval, lesdites protubérances (38, 40) ayant des surfaces sensiblement parallèles (41, 42) qui présentent des aires sensiblement identiques et sont au moins aussi longues que la fente est large, et créent un effet d'obturation au cours de la phase d'impulsions négatives. Une arête sensiblement tranchante (39) et une protubérance à section transversale sensiblement rectangulaire (38) peuvent faire saillie vers l'extérieur à partir de la surface amont de chaque barre ou fil définissant une fente du crible. Un cylindre, qui est mis en oeuvre pour épurer les pâtes de cellulose, présente une efficacité de retrait des débris qui est supérieure d'au moins 10 % à un celle d'un cylindre de criblage comparable à fils profilés ne présentant pas de protubérances à arêtes tranchantes.
PCT/US2000/011071 1999-04-27 2000-04-26 Profil de fil metallique profile a fonctionnalite amelioree WO2000065151A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46612/00A AU4661200A (en) 1999-04-27 2000-04-26 Edge wire contour with enhanced functionality

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US13114199P 1999-04-27 1999-04-27
US60/131,141 1999-04-27
US55786500A 2000-04-24 2000-04-24
US09/557,865 2000-04-24

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WO2000065151A8 WO2000065151A8 (fr) 2001-07-12

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011718A1 (fr) * 2002-07-30 2004-02-05 Finidro - Financiamentos Energéticos Lda. Equipement dote de grilles rotatives pour la pate a papier sans de recours d'un agitateur
WO2012097202A2 (fr) 2011-01-13 2012-07-19 Georgia-Pacific Consumer Products Lp Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs
EP2477710A1 (fr) * 2009-09-14 2012-07-25 GEA Houle Inc. Tambour de separation de liquide, separateur pourvu de ce tambour et kit de montage associe
US8297445B2 (en) 2007-11-14 2012-10-30 Filtration Fibrewall Inc. Screen basket
US8469198B2 (en) 2005-05-09 2013-06-25 Kadant Canada Corp. Screen basket with replaceable profiled bars
WO2016142035A1 (fr) * 2015-03-06 2016-09-15 Andritz Fiedler Gmbh Panier de filtrage à barrettes
US11066798B2 (en) 2019-06-13 2021-07-20 Sea To Sky Energy Solutions Corp. Water intake structure

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316570A2 (fr) * 1987-11-14 1989-05-24 J.M. Voith GmbH Tambour de tamisage et son procédé de fabrication
DE9108129U1 (de) * 1991-07-02 1991-09-05 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Siebelement
WO1997020103A1 (fr) * 1995-11-28 1997-06-05 Ahlstrom Machinery Oy Cylindre de criblage
WO1997034045A1 (fr) * 1996-03-11 1997-09-18 Beloit Technologies, Inc. Cylindre d'epurateur de pate a papier

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0316570A2 (fr) * 1987-11-14 1989-05-24 J.M. Voith GmbH Tambour de tamisage et son procédé de fabrication
DE9108129U1 (de) * 1991-07-02 1991-09-05 Heinrich Fiedler GmbH & Co. KG, 8400 Regensburg Siebelement
WO1997020103A1 (fr) * 1995-11-28 1997-06-05 Ahlstrom Machinery Oy Cylindre de criblage
WO1997034045A1 (fr) * 1996-03-11 1997-09-18 Beloit Technologies, Inc. Cylindre d'epurateur de pate a papier

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004011718A1 (fr) * 2002-07-30 2004-02-05 Finidro - Financiamentos Energéticos Lda. Equipement dote de grilles rotatives pour la pate a papier sans de recours d'un agitateur
US8469198B2 (en) 2005-05-09 2013-06-25 Kadant Canada Corp. Screen basket with replaceable profiled bars
US8297445B2 (en) 2007-11-14 2012-10-30 Filtration Fibrewall Inc. Screen basket
EP2477710A1 (fr) * 2009-09-14 2012-07-25 GEA Houle Inc. Tambour de separation de liquide, separateur pourvu de ce tambour et kit de montage associe
EP2477710A4 (fr) * 2009-09-14 2013-03-13 Gea Houle Inc Tambour de separation de liquide, separateur pourvu de ce tambour et kit de montage associe
WO2012097202A3 (fr) * 2011-01-13 2012-11-08 Georgia-Pacific Consumer Products Lp Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs
WO2012097202A2 (fr) 2011-01-13 2012-07-19 Georgia-Pacific Consumer Products Lp Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs
CN103228838A (zh) * 2011-01-13 2013-07-31 佐治亚-太平洋消费产品有限合伙公司 用于从粘合剂污染的可回收纤维移除粘性物的优化的筛篮
US8534468B2 (en) 2011-01-13 2013-09-17 Georgia-Pacific Consumer Products Lp Screen basket optimized for removal of stickies from adhesives-contaminated recyclable fiber
JP2014502679A (ja) * 2011-01-13 2014-02-03 ジョージア パシフィック コンスーマー プロダクツ エルピー 接着剤で汚染されている再生可能繊維からスティッキーを除去可能なスクリーンバスケット
US8641866B2 (en) 2011-01-13 2014-02-04 Georgia-Pacific Consumer Products Lp Screen basket optimized for removal of stickies from adhesives-contaminated recyclable fiber
EP2663688A4 (fr) * 2011-01-13 2014-06-25 Georgia Pacific Consumer Prod Tamis optimisé pour retirer des matières collantes d'une fibre recyclable contaminée par des adhésifs
WO2016142035A1 (fr) * 2015-03-06 2016-09-15 Andritz Fiedler Gmbh Panier de filtrage à barrettes
US10589196B2 (en) 2015-03-06 2020-03-17 Andritz Fiedler Gmbh Bar-type screen cage
US11066798B2 (en) 2019-06-13 2021-07-20 Sea To Sky Energy Solutions Corp. Water intake structure

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